Screen size
A1Winner: 5.5"+5.5%
X1s5.2"
Quick verdict
A1 leads the measured specs 9-1.
Measured wins
A1
9
spec wins
Overall winner
Ties
8
equal specs
X1s
1
spec wins
Screen size
Technology
A1
GSM / HSPA / LTE
X1s
GSM / HSPA / LTE
2G bands
A1
GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2
X1s
GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2
3G bands
A1
HSDPA 850 / 900 / 1900 / 2100
X1s
HSDPA
4G bands
A1
1, 3, 7, 38, 39, 40, 41
Resolution
Refresh rate
Peak brightness
Pixel density
CPU speed
RAM
Storage
Main camera
equal specsFront camera
equal specsBattery
Wired charging
Weight
Thickness
IP rating
Wi‑Fi
Bluetooth
equal specsUSB
equal specs5G support
equal specsNFC
equal specs3.5mm jack
equal specsSD card
equal specsStereo speakers
X1s
LTE
Speed
A1
HSPA 42.2/5.76 Mbps, LTE (2CA) Cat6 300/50 Mbps
X1s
HSPA 42.2/5.76 Mbps, LTE Cat4 150/50 Mbps
GPRS
A1
-
X1s
Yes
EDGE
A1
-
X1s
Yes
Announced
A1
2017, February. Released 2017, April
X1s
2017, September. Released 2017, September
Status
A1
Discontinued
X1s
Discontinued
Dimensions
A1
154.5 x 76.5 x 8.3 mm (6.08 x 3.01 x 0.33 in)
X1s
150.4 x 73.5 x 8.8 mm (5.92 x 2.89 x 0.35 in)
Weight
A1
182 g (6.42 oz)
X1s
166 g (5.86 oz)
SIM
A1
Nano-SIM + Micro-SIM
X1s
Dual SIM
Type
A1
IPS LCD
X1s
IPS LCD
Size
A1
5.5 inches, 83.4 cm2 (~70.6% screen-to-body ratio)
X1s
5.2 inches, 74.5 cm2 (~67.4% screen-to-body ratio)
Resolution
A1
1080 x 1920 pixels, 16:9 ratio (~401 ppi density)
X1s
720 x 1280 pixels, 16:9 ratio (~282 ppi density)
Protection
A1
Corning Gorilla Glass (unspecified version)
X1s
Corning Gorilla Glass 3
OS
A1
Android 7 (Nougat), Amigo 4
X1s
Android 7 (Nougat), Amigo 4
Chipset
A1
Mediatek MT6755 Helio P10 (28 nm)
X1s
Mediatek MT6737T (28 nm)
CPU
A1
Octa-core (4x2.0 GHz Cortex-A53 & 4x1.0 GHz Cortex-A53)
X1s
Quad-core 1.5 GHz Cortex-A53
GPU
A1
Mali-T860MP2
X1s
Mali-T720
Card slot
A1
microSDXC (uses shared SIM slot)
X1s
microSDXC (dedicated slot)
Internal
A1
64GB 4GB RAM
X1s
16GB 3GB RAM
Other
A1
eMMC 5.1
X1s
eMMC 5.0
Single
A1
13 MP, f/2.0, 1/3.1", 1.12µm, PDAF
X1s
13 MP, AF
Features
A1
LED flash, HDR
X1s
Dual-LED dual-tone flash, HDR, panorama
Video
A1
1080p@30fps
X1s
1080p@30fps
Single
A1
16 MP, f/2.0, 26mm (wide), 1/3.06", 1.0µm
X1s
16 MP, f/2.0, 26mm (wide), 1/3.06", 1.0µm
Video
A1
X1s
1080p@30fps
Loudspeaker
A1
Yes
X1s
Yes
3.5mm jack
A1
Yes
X1s
Yes
WLAN
A1
Wi-Fi 802.11 a/b/g/n, Wi-Fi Direct
X1s
Wi-Fi 802.11 b/g/n
Bluetooth
A1
4.0, A2DP
X1s
4.0, A2DP
Positioning
A1
GPS
X1s
GPS
NFC
A1
No
X1s
No
Radio
A1
FM radio
X1s
FM radio
USB
A1
microUSB 2.0, OTG
X1s
microUSB 2.0
Infrared port
A1
-
X1s
Yes
Sensors
A1
Fingerprint (front-mounted), accelerometer, gyro, proximity, compass
X1s
Fingerprint (rear-mounted), accelerometer, proximity
Type
A1
Li-Ion 4010 mAh, non-removable
X1s
Li-Ion 4000 mAh, non-removable
Charging
A1
10W wired
X1s
-
Colors
A1
Black, Gray, Gold
X1s
Black, Gold
Models
A1
A1
X1s
X1S, SWW1627
Price
A1
About 280 EUR
X1s
About 13000 INR